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UNITED JOSEPH'F. nAvinson, or OOLUMBUS,OE10, AssionoR ro HATOHER, or same PLACE.

EDMUND." n,

MANUFACTURE OFTHITMBLE-SKIEINS FORI'AXLES.

- SPECIFICATION forming part of Letters Patent No. 3s1,2is',aat a April 17,1338; 1

Application filed February 1888. Serial No. 262,998. (No model.) l

To aZZv whom it may concerm;

' ,of Columbus,

Be it known that I, JOSEPH F. DAVIDsoN,

in the county of Franklin and State of Ohio, have invented a new and useful Improvement in the Manufacture of Thimble- Skeins: for Axles, of which the following is a full, clear, and exact description.

This invention relates to the manufacture of sheet-metal thimble skeins for-wagon and other vehicle axles.-

. Heretofore in'the manufacture of sheetmetal axleskeins for vehicles the skei'n was .or over-the sheet-metal skein-blank until the ginal portions a separate strip of'metal of adjacent longitudinal marginalportions meet, or nearly so, and apply to said edgesor'marany suitable shape in transverse section, and submit these two pieces,- whichunited form the skein, to a welding heat, and make a double seam, theadded strip of metal connecting the skein-blank and forming a-solid thimble. Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar figures of reference". indicate corresponding parts in all the views.

Figure 1 represents an axle and wagon in part, with my improved skein applied to the axle. Fig. 2 isa longitudinal section of the skein with the metal strip in position before said two pieces are welded or connected together. Fig. 3'is a transverse section upon the line a w in'FigJZ, and Fig. 4a transverse section upon the line 3 4; inFig. 2. These views (Figs. 3 and 4) mainly show a varying shape for the skein at diflerent-points in itslength with the uniting-strip in position before welding, the shape of the skein in transverse section gradually merging from the" round figure shown in Fig. 3 for the outer 50 end of the skein to that shown in Fig. 4, and

assuming an approximately oval shape in between these two points, as usual in other;

skeins; but my invention is not restrictedto any particular shape for theskeinin trans l verse section. Fig. 5 is a transverse see, tional view near the outer end of the skeln after the same has been closed and a perfect double seam produced by the union of the added metal strip with the longitudinal man gins-of the bent skein-lolank, and Big. firepresents views in transverse section of said metal strip in certain of -the many different shapes in Whichit may be made.

A'is the sheet or wrought metal skein-. blank or body bent toshapeto -fit the axle-G,

,65 v l for which it isintended; and B is the metal 1 strip placed overror between the longitudinal adjacent marginal portions of the bent skeinblank. These longitudinalmarginalportionsor edges do not requirev to be drawn out, as they are not united by overlapping one another, but areunited by the separate strip B,

by bringing the pieces A and B to a welding heat and welding them together to makea double seam, substantially as shown in Rig. 5, the connectingor uniting strip B occupying an intermediate position in flattened-out conic. E,

nectiou with theilongitudiual marginal por-f' tions of the skein-body on both the insider-and i I outside surfaces of integral therewith. r Y

In thus manufacturing a shee tfor wrought metal thimble-skein both fuel and labor will the latter and becoming be economized, and a positive seam, both in I ternal and external, and perfect weld be produeed. V q The invention is not restricted to any particular shape of skei n-blank, nor yet to any particular shape of the unitingstrip of metal for making'and closing the longitudinal scam. I,

of the skein.

= Having thus described my invcntionJ claim 1 as new and desire to secure by Letters Patent vv 1. The method, substantially as herein described, of making'sheet o'rwroughtmet'al thimble-skeinsgwhich consists in'first bending over the skein' 'blank until its longitudinal -margins nearly meet, and then applying-a5 separate connecting or uniting-strip of metalto the adjacent marginal portions of said the skein, as set forth.

2. A sheet or wrought metal thimble-skein composed of a bent metal blank and a separate connectingstrip at or between the longitudinal seam 0f the skein, both welded or united together, substantially as-specified.

JOSEPH F. DAVIDSON.

Witnesses:

'JAS. FINLEY BROWN,

D. L. AGLER. 

